Donkey kicks strengthen the entire body, with emphasis on quads. Come onto all fours with your hands under your shoulders and knees under your hips. Kick one leg back at a time. The American Council on Exercise named it one of the best butt exercises in 2006 after conducting a study. The magic of the donkey kicks lies in the fact that they don’t require any equipment, are technically easy, and you can do them while watching TV or even reading a book. Before you know it, you’ll be fitter, faster and more agile.